Recently, a method of fabricating hollow nanospheres of cobalt selenide and cobalt sulphide has been announced (Y. Yin et al. Science Vol. 304, p711 (2004). We have investigated the stability and mechanism of collapse of hollow nanospheres by the method of Molecular Dynamics. First of all, we have analyzed single metallic systems exemplified by Pd. We found that for small hollow nanospheres up to about 10 000 atoms, the spheres collapsed quickly but not by vacancy-assisted mechanisms but by a mechanism involving Shockley partial dislocations. For larger hollow nanospheres, too much energy is required for that mechanism and the most likely mechanism for sphere collapse, now far slower, involves the vacancy mechanism.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/7800 must be provided.

1. Molecular Dynamics Study of Formation by Interdiffusion of Pd-Ni and Ag-Ni Nanoparticles
2. Phenomenological Analysis and Monte Carlo Simulation of Diffusion in Hollow Binary Alloy Nanospheres
3. Analysis of the time-dependence of the segregation of oxygen at metal-ceramic oxide interfaces using lattice Monte Carlo and finite element methods.
4. Bridging different length and time scales in diffusion problems using variable length lattice models